?
Solved

Unable to access company websites internally after adding an alternative UPN suffix to Active Directory

Posted on 2013-10-24
2
Medium Priority
?
699 Views
Last Modified: 2013-10-24
Hello Experts,

As part of the steps to migrate onto Office 365, I added our external domain name as an alternative UPN suffix within Active Directory and after doing so, we are no longer able to access our company websites internally.

I suspect that adding the UPN suffix has created an DNS issue internally and I am unclear how to resolve it, any information would be greatly appreciated.

Below is our network configuration;

Internal Domain
cadcasbs.local

External Domain
cadca.org

External Websites trying to access internally
www.cadca.org
drugfreekids.cadca.org
forum.cadca.org
cadcadnsconfiguration.PNG
0
Comment
Question by:Darrell James
2 Comments
 
LVL 24

Accepted Solution

by:
Mike Thomas earned 2000 total points
ID: 39598199
adding the upn should not matter whatsoever.

with the absence of the cadca.org locally in you dns all lookups will user forwarders or root hints to query external dns, what happens when u do an nslookup? does this external resolution take place?
0
 

Author Closing Comment

by:Darrell James
ID: 39599253
Thanks for the help, all of a sudden, it started working again, so I think something else was going on.
0

Featured Post

Will You Be GDPR Compliant by 5/28/2018?

GDPR? That's a regulation for the European Union. But, if you collect data from customers or employees within the EU, then you need to know about GDPR and make sure your organization is compliant by May 2018. Check out our preparation checklist to make sure you're on track today!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

With its various features, Office 365 can not only help you with your day-to-day business tasks, it can also do wonders for your marketing campaign.
You finally migrated Public Folders to Office 365, decommissioned the Public Folder mailbox database and since then, when you send an email from on-premise to mail-enabled Public Folders, you get the following error: "Misconfigured public folder mai…
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…
If you are looking for an automated solution for backup single or multiple Office 365 user mailboxes to Outlook data file, then you can use Kernel Office 365 Backup & Restore tool. Go through the video to check out the steps to backup single or mult…
Suggested Courses

601 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question